Question: The induces EMF in a d . c . machine while running at 9 0 0 rpm is 2 4 0 V . Calculate: a

The induces EMF in a d.c. machine while running at 900 rpm is 240V. Calculate: a) Assuming constant flux the speed at which the induced emf will be 220 V. b) The percentage increase in the field flux for an induced emf of 220 volts, if the flux does not remain constant

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